Description

The GTO is a semiconductor device that can be turned ON/OFF via a gate signal. The model considers various factors like forward bias threshold, forward and reverse break over voltage, blocking current, snubber elements, holding current, on/off resistance. Depending on the user's requirement, there is also an option to select the precision functionality, which allows the user to compensate for errors due to digital implementation of the model during the state switching as a function of time step. The GTO thyristor turns on when the applied anode-cathode voltage is greater than forward voltage and a positive pulse signal is present at the gate input (g > 0). When the gate signal is set to 0, the GTO thyristor starts to block but its current does not stop instantaneously.

The model also includes an option to enable Fail reset mode which produces a signal if the diode has reached its normal or reverse breakdown voltage or if an untimely firing had happened.

Table of Contents

Mask and Parameters

General

Name	Description	Unit	Variable = {Possible Values}

Name	Description	Unit	Variable = {Possible Values}
Vmin	Forward voltage drop	V	{[0,1e12]}
Ropen	Open state resistance	Ohm	{(0,1e12]}
Rclose	Closed state resistance	Ohm	{(0,1e12]}
Rsnubber	Snubber resistance	Ohm	{[0,1e12]}
Csnubber	Snubber capacitance	F	{[0,1e12]}
Control type	External Input pins: Schematic control signal; the received integer is converted to a binary string where each digit corresponds to a phase External Input sensors: Target digital inputs

Advanced

Name	Description		Unit	Variable = {Possible Values}

Name	Description	Unit	Variable = {Possible Values}
Fail reset	Fail reset		{Enable, Disable}
Precision valve	Enable: Enables recalculation of the state switch command using exact time between steps (as percentage of time step) Disable: does not use precision valve		{Enable, Disable}
Imin	Holding current	A	{[0,1e12]}
Fbov	Forward break over voltage	V	{[0,1e12]}
Rbov	Reverse break over voltage	V	{[0,1e12]}

Ports, Inputs, Outputs and Signals Available for Monitoring

Ports

Name	Description

Name	Description
Net_1	Network connection
Net_2	Network connection

Inputs

Name	Description

Name	Description
D	Delay used for precision valves
P	Binary coded firing pulses

Outputs

None

Sensors

Name	Description	Unit

Name	Description	Unit
D	Delay used for precision valve, measured from changing point to current time step	s
FailSig	Fail reset signal
I	Diode current	A
Delay	Delay due to forward voltage drop	s
Delay12	Delay in forward GTO Thyristor mode	s
State12	Diode state
P	Binary coded firing pulses
DelayExt12	Delay for external trigger	s
Cmd12	Signal state command
CmdExt12	Signal state external command

Gate Turn-Off Thyristor (GTO)